• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.962-963
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• 2013

트위터 해시태그(#, HashTag)는 트윗(Tweets)에서 특정 키워드나 내용을 주제별로 분류하고 검색을 보다 효율적으로 사용하기 위한 사용자 정의 태그이다. 사용자가 정의하기에 따라 다양한 형태로 작성되기 때문에 오히려 검색의 효율성이 떨어질 수 있으며, 사용자는 자신이 작성한 트윗에 어떤 해시태그를 추가해야 하는지에 대한 궁금증이 생기는 경우가 발생한다. 본 논문에서는 이러한 문제를 해결하기 위해 사용자가 작성한 트윗에 적합한 해시태그를 추천하는 기법을 제안한다. 수집한 트윗과 해시태그의 키워드를 추출하고 트윗의 유사도를 계산하기 위해 TF-IDF와 Cosine Similarity를 적용하여 유사한 트윗을 갖는 해시태그를 추천한다. 본 논문에서 제안된 기법을 검증하기 위한 실험으로 추천의 정확성을 평가했다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2024.01a
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• pp.161-162
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• 2024

언젠가 한 번쯤 "뉴스에서 발생하는 소식들은 주가변동에 어떤 영향을 줄까?" 하고 궁금해 본 적이 있을 것이다. 본 논문에서는 이러한 궁금증을 해소하기 위해 뉴스기사에 따른 주식시장의 변동을 연구분석한 내용을 소개한다. 이를 위해 뉴스기사를 크롤링하고 자연어 처리 기술을 통해 긍정적 기사와 부정적 기사를 분류하고 해당 날짜의 주가변동 그래프를 분석하여 뉴스에서의 긍정적 요소와 부정적 요소가 주식시장에 얼마나 영향을 주는지 머신러닝 알고리즘을 통해 알아보았다.

• Korean Journal of Childcare and Education
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• v.9 no.6
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• pp.339-368
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• 2013

This study aims to discover how three-year-old children to search for existence and its meaning, while they participate a programme, 'discourse among children through books' as a way of resolving curiosities. Data were collected between April 2, September 10, 2010 and the collected data included teacher's class records, pictures, discussion notes and interview materials. The results showed that 'discourse among children through books' follows steps in a process. The steps include: Deciding a topic that children should search for, choosing an appropriate book to resolve children's curiosities, spending some time for discoursing among children by using pictures in the book, and sharing what they had understood. Through this process, a pre-school teacher met with children who were full of abilities, ideas and motivation to explore with a little assistance. The pre-school teacher was able to overcome preconceived ideas that informational books could be difficult for children, and experienced various lessons, while the children led their own learning. It represents that the activity, 'discourse among children through books' can be a children centered inquiry learning teaching strategy, because the informational books ensure that the children gain knowledge and are actively in cogitation.

• Communications of Mathematical Education
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• v.25 no.2
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• pp.323-339
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• 2011

The expansion of exponential law as the law of calculation of integer numbers can be a good material for the students to experience an extended configuration which is based on an algebraic principle of the performance of equivalent forms. While current textbooks described that exponential law can be expanded from natural number to integer, rational number and real number, most teachers force students to accept intuitively that the exponential law is valid although exponent is expanded into real number. However most teachers overlook explaining the value of exponent of rational number or exponent of irrational number so most students have a lot of questions whether this value is a rational number or a irrational number. Related to students' questions, most teacher said that it is out of the current curriculum and students will learn it after going to college instead of detailed answers. In this paper, we will present several examples and the values about irrational exponents of a positive rational and irrational exponents of a positive irrational number, and study the recognition and fallacy of would-be teachers about the cases of irrational exponents of a positive rational and irrational exponents of a positive irrational number at the expansion of exponential law.

• Journal of the Korean Society for Library and Information Science
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• v.45 no.2
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• pp.209-228
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• 2011

Web search behavior has evolved. People now search using many diverse information devices in various situations. To monitor these scattered and shifting search patterns, an improved way of learning and analysis are needed. Traditional web search studies relied on the server transaction logs and single query instance analysis. Since people use multiple smart devices and their searching occurs intermittently through a day, a bundled query research could look at the whole context as well as penetrating search needs. To observe and analyze bundled queries, we developed a proprietary research software set including a log catcher, query bundling tool, and bundle monitoring tool. In this system, users' daily search logs are sent to our analytic server, every night the users need to log on our bundling tool to package his/her queries, a built in web survey collects additional data, and our researcher performs deep interviews on a weekly basis. Out of 90 participants in the study, it was found that a normal user generates on average 4.75 query bundles a day, and each bundle contains 2.75 queries. Query bundles were categorized by; Query refinement vs. Topic refinement and 9 different sub-categories.

• Korea Real Estate Review
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• v.28 no.1
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• pp.53-63
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• 2018

This paper shows that the value of land can vary based on the future availability of the land. According to the Korean principles of land appraisal by the Ministry of Land, Infrastructure, and Transport (MOLIT), the value of a piece of land is derived mainly from the latter's fertility level or local environment. In practice, however, the values of lands may vary even though their fertility level is invariant. This paper investigates a fundamental question for many professional appraisers who argue that appraisal practices are different from the principles of appraisal. It highlights the appraisal practices for agricultural and forestry lands, which have similar agricultural productivity levels or environmental conditions. It is shown in this paper that even though the fertility level of lands is invariant, the values of lands may vary based on their locations. Therefore, this can complement the principles of land appraisal. In this paper, real cases in local areas in Gapyeong County, Kyounggi province are investigated. It can be seen from the cases in the local areas that two agricultural lands may have different values based on their locations even though they have almost similar fertility levels (e.g., their physical distance from each other is less than 0.5 km but their values differ by around 19%). This paper thus argues that the value of a piece of land can be determined by its availability.

• (The) Research of the performance art and culture
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• no.18
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• pp.47-72
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• 2009

This study explores mime elements of court Hagmu(鶴舞) in literature and what is expressed in the practice of current Hagmu and examines what has been changed while others are kept intact. The content of Hagmu is that "attracted by lotus flowers in a pond, cranes dance around and peck at them, when the blossoms open wide with a girl [dancer] inside, upon which the surprised cranes fly away." The dance consists of 4 steps: the first step is for the entrance of cranes; in the second step the cranes dance moving across jidang(池塘) and the north; in the third step the cranes are curious about the lotus calyces, yeontong(蓮筒); and the cranes withdraw in the fourth step. The literature suggests that the dancing courses on the stage are limited to the east, the west, the south, and the north. The movement is limited to naeson (內旋) only in mujin(舞進) and mutoe(舞退). Furthermore, the gaze is only allowed toward the north and jidang. Motions are limited to naejog(內足), oego (外顧), and naego(內顧). However, the mime elements of current Hagmu are attributed to the effort of translating crane's life into a realistic story. It relates the life of cranes to that of human beings and implies love in it. Finally, the court Hagmu has entered the real world out of the literature, enriched with new elements. Under the transition from literature to practice the diversity of expression is added while the elements related with court codes such as courses, movements, directions, and motions are kept intact. These limitations, however, are coupled with the sensitive 'love' and the exposure of dancing instruments intrigues audience and creates dramatic effect. In conclusion the significance of mime elements in court Hagmu is in enhancing communication with audience.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2009.11a
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• pp.103-106
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• 2009

요즘 사람들이 인체에 대하여 많은 관심을 가지고 있다. 그러면서 나의 몸에 작은 변화가 일어 났을 때 나의 신체는 어떻게 변할 것인가에 대한 궁금증이 생기게 되었다. 인체의 변화는 많은 사람들 마다 조금씩 차이는 있겠지만 비슷한 변화를 있을 것이라고 추측 하였다. 일반 사람들에게 정보를 제공하기 위해서는 서비스하는 데이터가 통계적 검증 절차를 받아야 하는 관계로 일반적으로 많은 실험을 통해 얻어진 데이터들을 보여주도록 하였다. 본 시스템 에서는 인체모형 중 남자 머리 구조를 시각화 하여 심리/생리, 음향/음성 에 따른 머리의 변화되는 모습을 보여주도록 하였다. 또 머리를 구조화 하여 시뮬레이션 할 수 있는 공간을 제공하여 방문한 사람들이 이용하기 쉽고 뚜렷한 데이터를 서비스 하였다. 그리하여 전문가, 학생 또는 일반 사람들이 인체 변화에 대한 궁금한 점을 최대한 해결 할 수 있도록 해준다.

• Convergence Security Journal
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• v.14 no.3_1
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• pp.3-9
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• 2014

NCOs of the amy-navy-air force are the foundation in maintaining, developing and leading the army making manpower aquisition very important. Currently, the operation or the recruitment business is being overlapped by each training institutions leading to uneffectively decreasing the curiosities of the applicants regarding their future. Even though the NCO selection policy is strong in the aspect of retaining uniqueness, use of acquired specialist, and statute revision, it is showing insufficiency in publicizing, selection effectiveness, promotion of peoples' conveniency, and budget reduction. Therefore, if the unification regarding the recruitment of each military sectors are run by the MMA(Military Manpower Administration), which is the institute that is fully responsible for the recruitment duty, it can acquire excellent man power while decreasing effort and resources, provide accurate information to the NCO applicants on time, and provide improved services through the convenient facilities and systems.

• Vending industry
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• v.10 no.2
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• pp.27-29
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• 2010

"전국에 설치되어 운영 중인 커피자판기가 몇 대가되나요?" 협회로 이런 문의를 하는 전화들이 가끔씩 걸려 온다. 이렇게 외부에서는 실질적으로 자판기 운영대수를 궁금해 하는 경우가 많다. 하지만 협회에서 내는 통계는 매년 생산량기준으로 집계가 되기 때문에 이런 궁금증을 흡족하게 풀어주지 못했다. 실제 운영 중인 커피자판기의 추정대수 정도만을 이야기 할 수 있었지, 객관적인 데이터를 제공하지 못해 왔다. 이 같은 현상은 전국에 산재해 있는 커피자판기들의 대수를 합산하여 통계를 내는 시스템을 구축하기가 힘들기 때문이다. 국내의 경우 전문 운영업자들의 수도 무척 많은 데다가, 거미줄처럼 연계된 개인 운영자까지 포함을 하면 통계 대상이 엄청 광범위해 진다. 따라서 이들을 대상으로 통계 데이터를 합산하는 일은 거의 불가능에 가깝다. 캔음료자판기의 경우는 그래도 대형 음료업체의 수량 데이터를 제공받으면 객관적인 집계가 가능한 점과는 차이가 있다. 이런 탓에 국내는 커피자판기 운영 통계에 대한 갈증이 컸다. 전국에 몇 대 커피자판기가 운영되는지 지역별 분포는 어떻게 되는지 알고자 하는 수요는 많았지만 정보공급자는 없었다. 이러한 현실에서 금호 '마켓 리서치'에서는 운영 통계에 대한 정보갈증을 해소시키는 데이터를 공개한다. 이번에 공개하는 자료는 전국에 영업 신고된 식품자판기의 전체 통계이다. 본지에서 이미 지난 2009년 여름호에 '서울시 영업신고된 식품자판기 운영 현황'을 분석한 기사를 게재하여 큰 반향을 일으킨바 있다. 하지만 이번에 공개되는 데이터는 전국을 대상으로 해 정보가치가 더 크다. 과연 전국에는 몇 대의 식품자판기가 설치되어 있고, 지역별 어떠한 분포와 특징을 나타내고 있는지를 살펴보기로 하자.